Instructions for using an auto-darkening welding mask are as follows

1.Preparation before use: 
Remove the protective film from the mask lens before and after use.
Adjust the headband according to your head shape and comfort. You can rotate the adjustment knob located at the back of the headband clockwise to shrink the headband size, and counterclockwise to enlarge it.

2.How to Use ‌ :
Open the battery cover in the upper right corner of the mirror box, install the battery in the direction shown, and press the cover plate.
Put on the mask, press down on the back of the cap strap and adjust the tightness to fit your head.
The power switch on the inside of the mask, the window is bright before it is turned on, indicating that everything is normal.
Adjust the knob, black level 13# to 9# can be stepless adjustment, adjust to a satisfactory window brightness can be continuous welding .

3.Precautions ‌ :
Automatic variable-light welding masks cannot be used for high-intensity tilt welding and tilt cutting operations because of the risk of molten metal dripping and burning.
Please refer to the instructions before use to protect the wearer's eyes and face from harmful visible light, ultraviolet light, infrared radiation, sparks and splashes.
Do not use the mask in any welding operation without training in its use.
Do not use other brands of automatic light welding mask lenses at will, which will cause attenuation of the protective performance of the product.
As far as possible, use original parts according to the product part number in the instruction manual, and replacing them with other products may compromise the product protection and void the warranty.
Replace the sweat absorber regularly and replace the worn-out parts with the parts provided by the supplier.
Do not store the self-changing welding mask frame box near the heat source or humidity; Do not use alcohol, gasoline, or thinners to clean the box and do not subside it in water.

 4.Maintenance and Maintenance ‌ :
Replace the sweat absorber regularly and replace the worn-out parts with the parts provided by the supplier.
Replace the protective piece after it is broken or scratched, and do not touch the filter piece when replacing it.
The use of temperatures ranging from -5 ° C (23°F) to +55 ° C (131°F) reduces the reaction rate of the liquid crystal material in the frame group at lower ambient temperatures, but does not affect its various protective properties ‌3.

 5.Scope of application ‌ :
The automatic variable light welding mask is suitable for two-hand argon arc welding and other gas shielded welding, which can improve the welding quality, save welding auxiliary workers, reduce the idle time of the welding machine, and greatly improve the work efficiency and the quality of the workpiece .

Is a self-changing welding mask an IQ tax?

1.Can automatic dimming welding mask prevent welding arc?
Welding arc refers to the phenomenon of intense and long-lasting gas discharge between two electrodes under certain conditions, which can emit intense light and generate a lot of heat. At the same time, welding arc will be accompanied by high-intensity electromagnetic radiation and harmful gases, which will cause serious harm to the human body. The automatic light changing welding mask combined with light detection technology and liquid crystal technology can completely remove the harmful rays in the arc light, and realize the continuous protection of the welder's eyes and face.

2. What is the protection principle of automatic dimming welding mask?‌‌

Before the welding operation, the observation window of the automatic light changing welding mask is in a transparent state, and the welder can clearly observe the welding environment. At the moment of welding arc, the automatic light changing welding filter receives the welding arc through the arc sensor, triggers the control circuit, and the control circuit outputs the working voltage to the liquid crystal light valve, changes the transmittance of the liquid crystal light valve within one tenth of a second, reduces the strong light to the weak light that the human eye can bear, and filters out the harmful blue light, red light and ultraviolet light in the welding.